2015
DOI: 10.1590/0034-737x201562020007
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Juvenile tree growth correlates with photosynthesis and leaf phosphorus content in central Amazonia

Abstract: RESUMOLight and soil water availability may limit carbon uptake of trees in tropical rainforests. The objective of this work was to determine how photosynthetic traits of juvenile trees respond to variations in rainfall seasonality, leaf nutrient content, and opening of the forest canopy. The correlation between leaf nutrient content and annual growth rate of saplings was also assessed. In a terra firme rainforest of the central Amazon, leaf nutrient content and gas exchange parameters were measured in five sa… Show more

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Cited by 7 publications
(6 citation statements)
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References 33 publications
(47 reference statements)
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“…For example, P was the only leaf nutrient to correlate positively with sapling relative growth rates within central Amazonian forest (Marenco et al. ). Foliar P concentrations are composed of P fractions derived from biochemical compounds (e.g.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…For example, P was the only leaf nutrient to correlate positively with sapling relative growth rates within central Amazonian forest (Marenco et al. ). Foliar P concentrations are composed of P fractions derived from biochemical compounds (e.g.…”
Section: Discussionmentioning
confidence: 99%
“…This association between growth and P, particularly within light-limiting environments, has also been observed in other tropical forest ecosystems. For example, P was the only leaf nutrient to correlate positively with sapling relative growth rates within central Amazonian forest (Marenco et al 2015). Foliar P concentrations are composed of P fractions derived from biochemical compounds (e.g.…”
Section: Growth Rate and Leaf Trait Relationships Between Canopy Stratamentioning
confidence: 99%
“…SiB2, CLM; SELLERS et al, 1997) utilizam dados da velocidade máxima de carboxilação da Rubisco (V c-max ) e das taxas máximas de transporte de elétrons (J max, uma função da radiação fotossinteticamente ativa) torna-se importante o estudo destes parâmetros em espécies amazônicas. Alguns estudos relatam os efeitos das variações na abertura do dossel nas taxas fotossintéticas e condutância estomática em plantas jovens da Amazônia (NASCIMENTO; MARENCO, 2013;NASCIMENTO;MAGALHÃES, 2014;MARENCO et al, 2015). Na Amazônia central, Mendes e Marenco (2010) observaram que o funcionamento dos estômatos e fotossíntese de algumas espécies responde à variação diurna dos fatores ambientais.…”
Section: Introductionunclassified
“…Os padrões de resposta às condições de baixa disponibilidade hídrica acontecem de maneira diferente entre as espécies. Tais diferenças estão associadas a características especificas de cada espécie, como particularidades fisiológicas e anatômicas(MARENCO et al, 2015; CAMPELO et al, A redução da taxa fotossintética por meio do fechamento estomático, pode ser entendido como uma estratégia para evitar a perda de água na folha(SILVA et al, 2009). Dessa forma, o ajustamento estomático é considerado um dos principais indicadores do comportamento das espécies em relação a gestão interna de água(GRANDA et al, 2014).A Fv/Fm apresentou menor carga fatorial e foi correlacionado positivamente E, gs, A.…”
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